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# abscissa

[ ab-**sis**-*uh* ]

## noun

*Mathematics.*

*plural***ab·scis·sas,****ab·scis·sae**[ab-, sis, -ee].- (in plane Cartesian coordinates) the x-coordinate of a point: its distance from the y-axis measured parallel to the x-axis.

abscissa

/ æbˈsɪsə /

## noun

- the horizontal or
*x*-coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the*y*-axis measured parallel to the*x*-axis Compare ordinate

abscissa

/ ăb-sĭs**′**ə /

, Plural *abscissas* ăb-sĭs**′**ē

- The distance of a point from the y-axis on a graph in the Cartesian coordinate system. It is measured parallel to the x-axis. For example, a point having coordinates (2,3) has 2 as its abscissa.
- Compare ordinate

## Word History and Origins

Origin of abscissa^{1}

## Word History and Origins

Origin of abscissa^{1}

*linea abscissa*a cut-off line

## Compare Meanings

How does *abscissa* compare to similar and commonly confused words? Explore the most common comparisons:

## Example Sentences

The corresponding value of y determines a point P in accordance with the rule that x is the abscissa and y the ordinate of P.

To any value of x there corresponds a point N on the axis of x, in accordance with the rule that x is the abscissa of N.

Curves have been prepared having pressure as an abscissa and elasticity as ordinate.

The curve then crosses the abscissa upwards, and the positive curvature reaches a maximum.

Abscissa represents duration of exposure and quantity of incident light.

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